Clutch.



H. B. SAVAGE.

CLUTCH.

APPLIOATION-IILBD 001. 24, 1911.

Patented Sept. 24, 1912.

2 SHEETS-SHEET 1.

' INVENTOR h flf,

WITNESSES W 51 Waco.

HUT/7M ar M V ATTORNEKS H. B. SAVAGE.

CLUTCH.

APPLICATION FILED 00124, 1911.

1,089,595,. Patented Sept. 24, 1912.

2 SHEETS-SHEET 2.

i "til-:11? I AITURI/EYS RATE ' SPEECH.

hinted, when expanded, to

and ac lock with the same by 1-. xiii y ction. lt 1s "ible rings at the center, or direct 3 epthe point where they are divided nsvorsely; and, consequently, when the di- .ed ends are forced apart by a cam, or uivalent device, the or end portions the ring are expanded most and the cenpractically not at all. 'lherefme the does not a friction hold on'the all points, as is desirable. l have vercon1e this objection by providing the center of the with a fastening that perit to expand simultaneously and equally the divided end portions, so that the engages the rim equally at all points.

and illustrated in oinpanymg drawn in Wh1ch Isa itacc HOW oi the body of the shown in l. l l is a transverse or section of the clutch taken at right s to that shown in Fi 2 and includ- Fig. o is a side View cum pin used for separating the divided ends of the ring and thus expanding it. 6 is a detail section illustrating a certain modification.

1 ndicates the radial flange or body of the clutch which is fastened to a rotatable shaft B.

C indicates the divided expansihle spring ring, its ends being provided with inwardly uro'ecting jaws o, as shown in Fig. 2. Be-

ween these jaws is arranged the campin D, the same having a squared portion and cylindrical portions, as shown in l ig. 5, whereby it is adapted to he supported rotatably in the thickened rim of the flange A, as shown in Fig. 4, and Wherehy also it is cispted for attachmentot a cam lever E, as shown in Figs. 1 and This lever is keyed ho iiv finecificetionnf Letters Eaten? Anplieation filed outdoor 2 3i, ISM. Serial 1%.

in that common to fasten such ex- 11 attachment p 1 oracket 31, shown in l? lgs. 6 and l, serves as l 10 invention hereinutter described as on. the; reduced end of the cam pin D and its. free end is presided; with an adjustable screw 2 that bears. upon the body of a cone F which is adapted for adjustment length- --Wise of the shaft B n such adjustment, it

is. ob-irious the lever i n all to a. reater or less extent and therew -i ,b F

fore, the squared. portion or head or the earn one B may be rotated, as indicated by dotted lines in 2, so as to separate more widel' the 'aiws 0. of the rin C and. thus exnand the. rin asJai Whole. 1 b

En large/clutches, it is requisite that a spring attachment shall be made to the jaws I 0 of the ring CI, and this is shown in Figs. 2 land 3, Where spiral springs G are applied :to a rod 9 that passes throughthe jaws c as shown. The springs are of the compres- Esion type and serve to normally hold the aws a approximated; or, in other words,

they resist expansion of the bring, which resistance is overcome by the cam and lover already s(l@SCIlb(l. A. hen't i support or hearing for the adjacent end of the cam pin D and. also'holds the aws c in :the reqi'iired normal position.

in I 18 shown passing transversely through the hub or flange A. at a point (iirectly opposite the divided oortion of the ring Q'and also through hraoket A forming an attachment of the huh or flange A. It also passes'through a slot 5 in the ring C, hose longer axis is radial with the shaft B. A pin or rod K extends inward from the ring C at this point and a spiral spring L is applied thereto. The same is arranged between the bracket A and a nut applied to the pin or rod.

In constructing the clutch, the flange A and the ring C are titted to place, the pin is inserted through the flange A and through the slot in the ring C. It is obvious if the pin exactly fitted a hole at that point, it would prevent the ring 6 from contact with the adjacent portion of the pulley rim and also for a considerable distance on either side of this point when the ring is expanded by the means already described. While thering C prevents the rim from slipping toward the'center and so forcing the opposite side of the ring into contact with the pulley rim at that point, it is also clear that the slot 5 allows the ring to slip away from the center and to come into connay be thrown later-- nrdiieiemb h isinn (w prev 1 O L- lion :Frnm ti'irnwir ii e ring out into eeniacL when nni expanded hy the i l in i nae i the exp u 0.. the ring; applies F 385 to the wring in such. a (egree that 1iv expanded .and "the ad'iaeent portion of ihe ring is;

fumed on? i m enni'ani; with ihe pulley rim he same as at any other point. a

In Fin (3 l SilOY' a inedifieaiion in which a plate )i'ing' L is secured in arms or hraelmia M attached in or forming an inlegrai. portion of the A, the eenirai (7n of sneh sg irii'ig 33 Sing lhreugh a 'i'mn'ied on 'lhe ring; "Tl" ether lig l} iiluat ah-.1; how fiat spring van he used in place mi :1 i nne for insiding: the ring up Ln ils normal place. The spiral in e- 1s, he'wev 5ne:ierahle save in very sniall eluli'ihes where there is net eient space for it between lhe ring; and line shaft.

In order khal the clutch may be rendered dual-W700i", the periphery of the flange A is provided will: a groove, as shown in. Fig. el, which {groove is ideal with packing a own which the pulley rini a extends 10 as 10 em'ei iii and form close enniael herewith, so that due/r is prei'enind frnln aeeeas in the wnrhing yarts and Unis i'nafie to pick up the ,lnad very easily and. to Wear .mueh

' longer than when the clutch is left eniirely open at 1 at point.

While it is praf'erahle that the pin should he ar "anged at the central portinn of Lhe split rini and While in practice it would. always he placed at this point; it will he understood that it is not essential to the Working of the clutch, hut Lhe pin may he located cnnsiderahly to ei'l'her side of the (:ei'iter of ihe rim and the clutch will give Elll'flOSi" equally good results.

What 1 claim is Q 1. The combination with a shaft and flange seem-ed the-rein and having a pin arranged transversely in its periphery, of a divided spring ring having); a radial elon gated npening in its Central portion to mee'ive Said pin, and a. spring attachment applied at that point and serving in hnhil the with the adjacent pulley rini and means for serihed.

the rin z substantiall as (leserihen'l.

l Vitnesses G150. llm'rT, L. 38. MACK.

ring retracted or normally onief contact *Zqmnding the ring snbs'lantiailv as ,he eolnhinaiion with a shah, a'n il a irifugal action, and means for expanding 

